Title :
Application of a disturbance observer for a relative position control system
Author :
Yoon, Young-Doo ; Jung, Eunsoo ; Sul, Seung-Ki
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Seoul Nat. Univ., Seoul
Abstract :
In a relative position control system, where feedfoword control can not be applied and the position control performance is restricted only by the bandwidth of the position controller, a disturbance observer are used actively to enhance the control performance. The position reference is considered as a disturbance by the proposed method. Therefore, the relative position control is performed by the disturbance observer as well as by the position controller. As a result, the position control performance is enhanced up to about 33 [%] compared to that of the conventional method with the disturbance observer. The feasibility of the proposed method has been verified by the experimental results using a high precision linear motion control system as well as by the analysis based on Bode plot.
Keywords :
feedforward; motion control; observers; position control; Bode plot; disturbance observer; feedfoword control; high precision linear motion control system; relative position control system; Application software; Bandwidth; Computer science; Control systems; Electronic mail; Feedforward systems; Magnetic analysis; Motion control; Permanent magnet motors; Position control; Motion control; disturbance observer; high precision control; linear permanent magnet synchronous motor; relative position control;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2008. APEC 2008. Twenty-Third Annual IEEE
Conference_Location :
Austin, TX
Print_ISBN :
978-1-4244-1873-2
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2008.4522749